Improvement in surface-gages



A. SCHMITTER.

Surface-Gages.

Patented June 2,1874.v

UNITED PATENT OFFICE.

ANTON SOHMITTER, OF OHIOOPEE, MASSACHUSETTS.

IMPROVEMENT IN SURFACE-GAGES.

Specification forming part of Letters Patent No. 151,627, dated June 2, 1874; application filed March 27, 1874.

To all whom it may concern:

Be it known that I, ANTON SGHMITTER, of Ohicopee, in the county of Hampden and State of Massachusetts, have invented certain new and useful Improvements in Surface-Gages; and I do hereby declare that the following is a full, clear, and exact description thereof, whereby a person skilled in the art can make and use the same, reference being had to the accompanying drawings and to the letters of reference marked thereon.

Like letters in the figures indicate the same parts.

Surfacegages, as commonly constructed, have been `made with a dat base, to which has been rigidly attached an upright stem or rod. Upon this rod is a slide carrying the cross-bar or arm, at the ends of which are the points of the gage. The use of such gages is to adjust a piece of work upon the bed of a planer or other machine. The point is generally placed nearly in position, and then the adjustment is made exact by rapping the arm with any suitable implement ncar at hand. It is usually provided with clamp-screws, for holding the arm in position.

My invention consists in proving a screwadjustment at the foot ofthe vertical bar, where it is connected to the foot-plate, so that the points ofthe gage shall have a delicate and tinemotion for adjusting them to an exact p0- sition, and dispense with the jarring and rapping above named.

In the accompanying drawing, Figure lis a front View of my improved surface-gage, with a part of the base in section. Fig. 2 is a side view of the gage A is the base. B is the vertical rod. C is the sliding piece, which carries the arm D. E is a clamp-screw, for holding the piece O in place. F is a clamp for holding vthe arm D in any desired position. G is a block forming the lower end of the rod B. It turns between the cheeks I and J of the base A. upon the pin H. K is a bar rmly attached to the block G. At one end it is operated by the screw L passing through the base A, and at the other'it form s. a spring, bearing up against the bottom of A, and resisting the pressure of the screw L. One end of the bar K thus actsvas a lever and the other as a spring.

Y The operation of my invention is as follows: Vhen it is desired to set the point of the gage at any height or position, it is placed as nearly as may be right by hand, andthe screws E and F clamped. The adjusting-screw L is then turned to raise or lower the point to the exact required position. This is accomplished by the turning ofthe upright bar B upon the pin H. The gage can then be moved to any other partof the-work to determine the height in the usual manner.

"What I claim as my invention is- The screw and spring adjustment K L, in combination with the base A and vertical rod G B, substantially as herein described.

ANTON SOHMITTER.

Vitnesses:

THEO. G. ELLIS, WENDELL R. CURTIS. 

